Digital electronic detonator chip and control method based on two-wire bus

Abstract

The invention relates to a digital electronic detonator chip and a control method based on a two-wire bus. The chip adopts a two-wire bus with non-polarity, one master and multiple slaves half-duplex, communication and power supply, and supports amplitude and pulse width modulation communication; in pulse width modulation communication, the standard pulse width value of downlink communication can be configured as required, and uplink The pulse width value of the communication standard is fixed; the chip contains all the functional modules and communication instruction sets to complete the detonation operation, and the charging voltage value can be configured externally; the chip control method consists of "detonator chip information injection and detonator chip on-site detonation". Through the above method, the present invention can meet the requirements of the latest Chinese public safety industry standard "General Rules for Industrial Electronic Detonator Information Management (GA1531-2018)" and practical application requirements, improve anti-interference performance and communication security and reliability, expand application scenarios, and improve chip availability. Configurability and detonation safety, standardize the control process, avoid improper operation, and reduce overall costs.

Description

technical field [0001] The invention relates to the technical field of digital electronic detonators, in particular to a digital electronic detonator chip and a control method based on a two-wire bus. Background technique [0002] With the development of microelectronics technology, digital technology, encryption technology, etc., digital electronic detonators (hereinafter referred to as electronic detonators or detonators) have been rapidly developed and applied. Development Direction and Goals (Draft for Comments)” mentioned in the notice that “the proportion of electronic detonators will reach 100% by the end of 2025”, improving the safety, reliability, accuracy and environmental protection of blasting, and reducing the overall cost. [0003] Relevant national ministries, commissions, and bureaus have formulated corresponding industry standards and implementation rules. For example, the Ministry of Public Security of China issued and implemented the "General Rules for Inf...

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Problems solved by technology

[0004] However, there are some deficiencies in the technology of the existing digital electronic detonator control chip (hereinafter referred to as the detonator that contains digital electronic detonator chip). For example, the detonation energy is "low voltage and low energy". Sensitive drug heads must be used, which increases the production cost. , the application scenario has limitations; the charging voltage is not configurable, which limits the expansion of the application scenario; even if the clock can be calibrated online, the on-chip clock frequency accuracy is not high, resulting in large timing errors and affecting the precise blasting effect; the maximum anti-DC voltage is only 60V ; There are few safety measures, such as no emergency discharge command; it does not support pulse width modulation communication mode and the downlink standard pulse width value can be configured; the bus communication distance is limited, and the communication is greatly disturbed by the environment; the control method does not conform to the latest "Industrial Electronic Detonator Information Injection General Rules (GA1531-2018)" requirements, etc.

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